Autosomal dominant nonsyndromic cleft lip and palate: significant evidence of linkage at 18q21.1.
Am J Hum Genet
; 81(1): 180-8, 2007 Jul.
Article
em En
| MEDLINE
| ID: mdl-17564975
ABSTRACT
Nonsyndromic cleft lip with or without cleft palate (NSCL/P) is one of the most common congenital facial defects, with an incidence of 1 in 700-1,000 live births among individuals of European descent. Several linkage and association studies of NSCL/P have suggested numerous candidate genes and genomic regions. A genomewide linkage analysis of a large multigenerational family (UR410) with NSCL/P was performed using a single-nucleotide-polymorphism array. Nonparametric linkage (NPL) analysis provided significant evidence of linkage for marker rs728683 on chromosome 18q21.1 (NPL=43.33 and P=.000061; nonparametric LOD=3.97 and P=.00001). Parametric linkage analysis with a dominant mode of inheritance and reduced penetrance resulted in a maximum LOD score of 3.61 at position 47.4 Mb on chromosome 18q21.1. Haplotype analysis with informative crossovers defined a 5.7-Mb genomic region spanned by proximal marker rs1824683 (42,403,918 bp) and distal marker rs768206 (48,132,862 bp). Thus, a novel genomic region on 18q21.1 was identified that most likely harbors a high-risk variant for NSCL/P in this family; we propose to name this locus "OFC11" (orofacial cleft 11).
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cromossomos Humanos Par 18
/
Fenda Labial
/
Fissura Palatina
/
Ligação Genética
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Am J Hum Genet
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Estados Unidos